Swivel electric connection



Nov. 28, '1939. J. F. Mose SWIVEL ELECTRJQC CONNECTION Filed May l2, 1935 I l, \\\\w..

Josef Mosev Gttomeg Patented Nov. 1939 UNITED STATESPATENT OFFICE- Y 1 swlvEn El..12123: 11:12:14ioivivnc'rroN'.` v Y 2 Claims.`

My invention relates to a swivel electric connector. and the objects of my invention are:

First, to provide an electrical connector that is provided with a swivel to prevent the electric wire 6 from becoming twisted and snarled and therefore quickly deteriorate.

-Second, to provide a. connector of this class which is very eicient in its action.

Third, to provide a connector of this class in l which there is a minimum of arcing.

Fourth, to provide a connector of this class which is positive in its action.

Fifth, to provide a connector of this class where one member revolves so easily, relatively tothe other that any slight turning of the wire will be immediately taken up by the connector.

Sixth, to provide a connector of this class which Y is very simple and economical of construction,

easy to operate, easy to install, eilicient in its action and which will not readily' deteriorate or get out of order.

With these and otherobjects in view as willV appear hereinafter,.my invention consists of certain novel features of construction, combination and arrangement of parts and portions as will be hereinafter described in detail and particularly set forth in theappended claims,v reference being had )zo the accompanying drawing and to the characters of reference thereon which form a part of this applicatiomin which:

Figure 1 is a sectional view along the line I-I of Fig. 2; Fig. 2 is a transverse sectional view along the line 2-2 of Fig. 1, and Fig. 3 a transverse sectional view along the line 3-3 of Fig. l. Similar characters of reference refer to similar parts and portions throughout the several views of the drawing.

Casing member I, casing cap 2. revoluble lcore 3, cap connecting screw 4, ball supporting angles l and 6, ball supporting angles 'l` and I, balls 3 and I 0, contacts II, I2, I3, Il, conductor Il and conducting terminals I6 and I1 constitute the' principal parts and portions of my swivel electric connector.

The casing member I is made of any suitable non-conducting material and provided with an enlarged bore Iaat'its upper end, and a. reduced bore, Ib, at its lower end. Mounted in these bores Ia and Ib isa core member 3 which is also made of insulating material provided with enlarged upper portion 3a which fits freely in the bore Ia,

and with the reducedV separate tapered lower portion 3b which flts freely in the conforming bore Ib, s hown best in Fig. 1 of the drawing. It

u is preferred that the enlarsed portion 3a extend (ci. 173-324) Y .slightly above the upper end of the casing I, as

shown best in Fig. l of the drawing. v

Mounted over the upper end of the members I and 3 is a cap member 2 which rests against the upper end of the member I vand is provided with B a recess portion centrally therein for receiving the upper end of the. member 3.

Mounted in the upper outer side of the revoluble core member 3 is an annular angle member 3 supportedv therein by extensions 6a. and mounted in, 10 the recess in the cap memberv 2 is an annular angle member 5 supported by extensions 5a, and interposed between the members. 5 and 8 are a row of balls 9, thus providing ball bearings between the revoluble core 3 and thefcap 2. Con- 15 necting with the annular member l5 by means of the extension lia is the conductor terminal I8, which connects with any source of electrical en-4 ergy and connecting with the extension 6a is contact member II which extends down through "I I is another contact member I 2, whichis a spring contact for receiving the electrical contact of an electrical equipment.' Mounted at the juncture of the reduced portion Ib and the enlarged portion Ia of the casing I is anannular angle member l, and mounted in the core member '3 is a, similar angle member 3 s supported by the screw 8a. Screw 3a also supports a contact member i3 which extends downwardly to the lower extremity of the member 3b,v and secured thereto is alsoanother spring contact member Il for receiving the other contact mem.- 35 ber of an electrical equipment. Connecting with the angle 1 is a conductor I5 which extends uplwardly on the inner side of the large bore of the casing lI, then outwardly at right angles and is provided with a. hole'which is threaded, that connects with-the screw 4 which screw l holdsthecap 2 rigidly in position on the casing I and o ver the upper end of the core member 3, and also serves as a conductor, as the other inward conductor terminal I1 extends downwardly through the cap and connects with the screw member I, as shown best in Fig. 1 of the drawing. there' being provided a separate insulating member 2a between said conducting terminal I1 and the annular angle member 5. 50

It will be here noted that'the members 3a and 3bv are separate members held together by the bolt 3c 'and prevented from turning by the webb v 3d in a conforming groove in member 3a. It will m connection` with the ban bearings 9 and in, and

angular housings to prevent arcing, which compound consists of an animal oil and a small amount of graphite, mixed together to form a paste.

'The operation of my swivel electric connector is as follows: The terminals i6 and I1 connect with any source of electrical energy and the contacts Il to il inclusive, connect with contacts of any electrical equipment. Any twist in the termina] conductors l5 and I1 will be readily taken up as the casing i and cap 2 will revolve relative to the core 3, and this revolution is mounted on ball bearings which provide veryv easy rotation, and the separate electric conductors through the connector, clearly carry the current along Vthe proper line to the contacts, without any chance of leakage, and in which the arcing is reduced to -aminimum..

Though I have shown and described a particular construction, combination and arrangement of parts and portions, I do not wishy to be limited to this particular construction, combination and arrangement, but desire to include in the scope of my invention the construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as newand desire to secure by Ietters Patent is:

1. In a swivel electric connector, the combination with a casing member provided with an enlarged bore at one end and with a reduced tapered bore communicating therewith, a casing cap adapted to fit one end thereof, a revoluble core member conforming to said bore filling the the same and provided with a separate tapered portion conforming with and filling the reduced bore in said casing and extending at its opposite end some distance into said casing cap, a ball supporting annular angle member mounted in c said casing cap, another ball supporting annular angle member mounted at the opposite end of said enlarged bore at the juncture of said reduced bore portion and 'corresponding opposed angle members mounted on said 'revoluble core at its opposite ends, ball bearings interposed between said angle members, an electric conductor extending into said casing cap to the upper bali bearing angle members then` iiiow'nwardly4 through said revoluble coremember and terminating in an electrical equipment contact in the reduced separate portion of said core member,

another electrical conductor extending through said casing cap and 'casing and connected with the lower ball bearing angle members and thence through said core members and connecting with van electrical equipment contact supported in the reduced portion of said revoluble corea cap connecting screw connecting said Acasing cap with said casing and serving as a portion of one of the electrical conductors throughsaid casing cap and casing.V

2. In a swivel electric connector, the combination with a casing member provided with an enlarged bore at one end and with 'a reduced tapered bore communicating therewith, 'a casing cap adapted to iit one end thereof, a revoluble core member conforming to said bore filling the same and provided with a separate tapered portion conforming with'and iilling the reduced bore in said casing and extending at its opposite end bore portion and corresponding opposed angle members mounted on said revoluble core at its opposite ends, ball bearings interposed between said angle members, an electric conductor extending into said casing cap to the upper ball bearing angle members then downwardly through said revoluble core member and terminating in an electrical equipment contact in the reduced separate portion of said core member, another electrical yconductor extending through said casing cap and casing and connected with the lower ball bearing angle members and thence through said core members and connecting with an electrical equipment contact supported in,the reduced portion of said revoluble core, a caponnecting screw -connecting said casing cap withsaid casing and 'serving as a portion of one oi the electrical con- 

